asyncwaterfall.js

var async = require('async');

async.waterfall([
    function(callback) {
      // some code to execute
      // in case to go to next function provide callback like this.
      callback(null,valueForNextFunction);
      // Got some error ? Don't wanna go further.
      // Provide true in callback and execution will stop.
      //callback(true,"Some error");
    },
    function(parameterValue,callback) {
      // Some code to execute.
      callback(null,"Some data");
    }
  ],function(err,data) {
  // Code to execute after everything is done.
});